Migrate to viser viewer (#2515)

* fix jittering in markdown in viewer beta

* Revert "fix jittering in markdown in viewer beta"

This reverts commit 70ade42e46.

* Migrate to viser viewer

* Fix docs

* print correctly formatted url in banner for viewer beta

* add deprecation warnings to viewer_elements.py

* fix export string scientific notation bug, change .5 to 2.0 sec transition time

---------

Co-authored-by: Justin Kerr <justin.g.kerr@gmail.com>

docs/reference/api/viewer.rst

@@ -3,6 +3,6 @@
 Viewer
 ============
 
-.. automodule:: nerfstudio.viewer.server.viewer_elements
+.. automodule:: nerfstudio.viewer.viewer_elements
    :members:
    :show-inheritance: